Retreive the file name and size uploaded via postman in asp.net core - asp.net-core

Question

I have tried the following code ..
When I try out the following code I get 404 content not found. Also my controller doesn't get hit when I try to debug the code ..
public async Task<IActionResult> Download(string filename)
{
if (filename == null)
return Content("filename not present");
var path = Path.Combine(Directory.GetCurrentDirectory(),"wwwroot", filename);
var memory = new MemoryStream();
using (var stream = new FileStream(path, FileMode.Open))
{
await stream.CopyToAsync(memory);
}
memory.Position = 0;
return File(memory, GetContentType(path), Path.GetFileName(path));
}

Answer 1

Upload file with size and filename as response:
public async Task<IActionResult> OnPostUploadAsync(IFormFile file)
{
long size = file.Length;//in bytes
if (file.Length > 0)
{
var name = Path.GetRandomFileName();
//var fileOriginName = file.FileName;
var path = Path.Combine(System.IO.Directory.GetCurrentDirectory(), "wwwroot", name);
using (var stream = System.IO.File.Create(path))
{
await file.CopyToAsync(stream);
}
return Ok(new { size = size, filename = name });
}
else {
return Ok(new { size = 0, filename = ""});
}
}
===============================================
I have an api like below and I had a file test.txt in wwwroot folder.
public async Task<IActionResult> Download(string filename)
{
if (filename == null)
return Content("filename not present");
var path = Path.Combine(System.IO.Directory.GetCurrentDirectory(), "wwwroot", filename);
var memory = new MemoryStream();
using (var stream = new FileStream(path, FileMode.Open))
{
await stream.CopyToAsync(memory);
}
memory.Position = 0;
var contentType = "APPLICATION/octet-stream";
return File(memory, contentType, Path.GetFileName(path));
}
Then when I call localhost:port/home/download?filename=test then I'll get exception that file can't find. And when I call localhost:port/home/Download?filename=test.txt it succeeds.
My API is in an asp.net core MVC project and I think you need to check the contentType.